IBM 2254 Hardware Maintenance Manual page 32

The following illustration shows the location of the connectors on the back of the
microtower model computer.
Note: The connectors on the rear of the computer have color-coded icons to help you
Connector
Mouse connector
Keyboard connector
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IBM : Hardware Maintenance Manual
1 Mouse connector
2 Keyboard connector
3 Serial connector
4 Parallel connector
5 Monitor connector
6 USB connectors
7 Ethernet connector
to determine where to connect the cables on your computer.
Description
Used to attach a mouse, trackball, or other pointing device that
uses a PS/2 mouse connector.
Used to attach a keyboard that uses a PS/2 keyboard connector.
8 Audio line out connector
9 Audio line in connector
10 Microphone connector
11 Serial connector
12 PCI slots
13 Power connector